Revit Multiple CommandTheme

CommandTheme.cs

using Autodesk.Revit.Attributes;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using System.ComponentModel;

namespace RevitAddin
{
    [DisplayName("Theme\rChange")]
    [Transaction(TransactionMode.Manual)]
    public class CommandTheme : IExternalCommand, IExternalCommandAvailability
    {
        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elementSet)
        {
            UIApplication uiapp = commandData.Application;
            UIThemeManager.CurrentTheme = UIThemeManager.CurrentTheme == UITheme.Dark ? UITheme.Light : UITheme.Dark;
            return Result.Succeeded;
        }
        public bool IsCommandAvailable(UIApplication applicationData, CategorySet selectedCategories)
        {
            return true;
        }
    }
    [DisplayName("Theme\rChange")]
    [Transaction(TransactionMode.Manual)]
    public class CommandTheme1 : IExternalCommand, IExternalCommandAvailability
    {
        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elementSet)
        {
            UIApplication uiapp = commandData.Application;
            UIThemeManager.CurrentTheme = UIThemeManager.CurrentTheme == UITheme.Dark ? UITheme.Light : UITheme.Dark;
            return Result.Succeeded;
        }
        public bool IsCommandAvailable(UIApplication applicationData, CategorySet selectedCategories)
        {
            return true;
        }
    }
    [DisplayName("Theme\rChange")]
    [Transaction(TransactionMode.Manual)]
    public class CommandTheme2 : IExternalCommand, IExternalCommandAvailability
    {
        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elementSet)
        {
            UIApplication uiapp = commandData.Application;
            UIThemeManager.CurrentTheme = UIThemeManager.CurrentTheme == UITheme.Dark ? UITheme.Light : UITheme.Dark;
            return Result.Succeeded;
        }
        public bool IsCommandAvailable(UIApplication applicationData, CategorySet selectedCategories)
        {
            return true;
        }
    }
    [DisplayName("Theme\rChange")]
    [Transaction(TransactionMode.Manual)]
    public class CommandTheme3 : IExternalCommand, IExternalCommandAvailability
    {
        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elementSet)
        {
            UIApplication uiapp = commandData.Application;
            UIThemeManager.CurrentTheme = UIThemeManager.CurrentTheme == UITheme.Dark ? UITheme.Light : UITheme.Dark;
            return Result.Succeeded;
        }
        public bool IsCommandAvailable(UIApplication applicationData, CategorySet selectedCategories)
        {
            return true;
        }
    }
    [DisplayName("Theme\rChange")]
    [Transaction(TransactionMode.Manual)]
    public class CommandTheme4 : IExternalCommand, IExternalCommandAvailability
    {
        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elementSet)
        {
            UIApplication uiapp = commandData.Application;
            UIThemeManager.CurrentTheme = UIThemeManager.CurrentTheme == UITheme.Dark ? UITheme.Light : UITheme.Dark;
            return Result.Succeeded;
        }
        public bool IsCommandAvailable(UIApplication applicationData, CategorySet selectedCategories)
        {
            return true;
        }
    }
    [DisplayName("Theme\rChange")]
    [Transaction(TransactionMode.Manual)]
    public class CommandTheme5 : IExternalCommand, IExternalCommandAvailability
    {
        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elementSet)
        {
            UIApplication uiapp = commandData.Application;
            UIThemeManager.CurrentTheme = UIThemeManager.CurrentTheme == UITheme.Dark ? UITheme.Light : UITheme.Dark;
            return Result.Succeeded;
        }
        public bool IsCommandAvailable(UIApplication applicationData, CategorySet selectedCategories)
        {
            return true;
        }
    }
    [DisplayName("Theme\rChange")]
    [Transaction(TransactionMode.Manual)]
    public class CommandTheme6 : IExternalCommand, IExternalCommandAvailability
    {
        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elementSet)
        {
            UIApplication uiapp = commandData.Application;
            UIThemeManager.CurrentTheme = UIThemeManager.CurrentTheme == UITheme.Dark ? UITheme.Light : UITheme.Dark;
            return Result.Succeeded;
        }
        public bool IsCommandAvailable(UIApplication applicationData, CategorySet selectedCategories)
        {
            return true;
        }
    }
}